Priming-cup.



R. HUFF.

` lPmmmfa CUP. APPLICATION man JUNE 1.11917.,

Patented Dec. 17, 1918 Wl TNESSES 4 TTU/UVE KS eos'snLL'HUFF, orDETROIT. MICHIGAN, AssIe j MICHIGAN, A ooRPoRAT vThis invention`relates` rto i "Still ,anolier 4object-iis to provide eitizeirof :theUnited tion engines or for other si @ne obJeety of the invent ion ua-qirininigvcnp ivliu'li is of and is. easily manufactured.

...Anotl-ierobject of the invention UNITED sfrrirriisv PATENT onirica..

rRIMING-CUP.

' application InedJune i, 1917.

. Benitv'linoivn that l, RUSSELL 'llUFig'a States, residing at Deaveinvented certain nov.' 'einents in lriining-Cups, vying is a clear,full, and

is to pro- Yvidea .nfiniiii cu ivvlii'eli can be niade. freni Thesebeing Afrom sheet metal and `of such dimensions as to be. inexpensive.

a priniliiigfeiipso. eoiistrueted thai' the amount. olE "inaterialremoved factoring itis lelie.

rfi-oni the stock in 'inanir niniuin and; consequently, cosof.:luaeliiniiigV and also ofthe mate. rial a minimum,

ent. invention, the. .saine cons features ofrons'truetion andl of partsto be liereinai'te claimed with rei'eiiei combinations r deseribed andthen ice to ille aceoiiipanying drawings which; illustrate ay suitableeniloodiinent. of the invention having il and other objects in View.,

:Figure l is an elevation of the. improved priming cup..

Fig. 2 is ay plan View of the saine.

Fig. 3 is a vertical sectional view ilirough the priming cup shovviiiigYthe valve aited.

Fig. i is a similar view showing -e valve raised from its Seat.

Fig. 5 is a sectional elevation o? of the cup beloie it is united wi"-proper.

Fig. 6 is an eievation pariy in section showing the ivalve.

Fig. 7 is a Vertical elevation or" rhe valise taken at right aiigles-oFig. 6.

Fig. 8 is a cross section alien on lic line 8 8 of Fig. 7.

Referring to Fig. 3. the priming cap is seen io consist. oi a bodycomposed of lie ein 1d and stein 1l in the laier of which the valve 12is threaded. The cup 10is stamped is united to the stem e thincylindrical exso as to gri tliebotthe shape o the stem 11 by spinningover li tension 13 o? the latter, tom of the cap firmly,

Specication of Letters Patent.

bent.' at.- right among the objeets oi' tlie'pres- Qs 'of certain;

' the cup.

ie idiove Serial No. 172,149.

before the'spi iii Fig'. "i" [his- C Vlind may, or' course. be suitabledies ill spinning.

The exterior of the preferably that. it. in

vided ivili a to faeilit This lie ing the the axis length t0' receivethe lovver end. piece of roui and iiatle which' projects lateral lnorderfto the zvaive when itl is longitudinal grooves l edv port iorrshow lia ilie moved from ih ture of fhis iin The cup 10 he can beiinxnufactnrcd with and ihe siem il, i

die he manufactured NOR TO DODGE BROTHERS, OF DETROIT, ION OF MICHIGAN.

' aient-ed Dee. 1.7, 1918..

lining operation being shown ne operation of turning over ricalextension to grip the cup performed by the use of thisl method ispreferred to .stein 11 is threaded,

.vith a lstandard pipe thread, so ay be. seren'ed int ing oi'fotlier suo a cylinder eastpport and inay also be proportion of hexagonal sectionate `the application of a wrench.` xagonal section is provided by inakstein from hexagonal stock.

of the stein is a ilireaded through the Along cylindrical hole, lrenterpart of its valve 12 and provided with a conical Aseat 14 Afor saidvalve near its The valve -12 is inade from a id stoel; preferably ofbrassor oher nen-corrosive inetal. threaded near one end and has heother end: angles with the threaded part ned to :forni This stock is asuitable` handle l v beyond the edge of provide a passage past and lientas shown in the dravvi raised from its seat,"

5 are, cut in the tiireadfin exai'ninatioii of the drawings will amountof material io be ree stock used in th e manufacprov'cd cup is verysmall.

ing made from sheet metal very little waste iiiade from het rolledStork, requires he reinovai sniall anionntiof material valve 12, beingmade from which is fiattened at one ei ig nal of oni;Y a idoreovei, iiieround sock io fo a liann can practically without waste,

tv e pariicularly if t:he threads are produced oy a roliingj process.The stock ivliif-li be ieqnired if the saine @up iv a Solid hat' would,of eou great iii diameter as the cup and a large amount' have to heremoved, both and from the interior of the cup machined from also benecessary to surfaces, an expensii entirely eliminated in in described.

would as turned from rse, be at least as upper end of the of inaterialwould irozn the exterior body. 'With a solid stock, it would v inillwrench engaging e operation which is the construction here- It isobvious that the invention is susceptible of further modification asparts may be omitted, arts added and parts substituted without epartingfrom the spirit and scope of the invention as expressed in the claims.

What I claim as new is: 4

1. A priming cup, comprising a stem having a bore screw-threaded in itsouter portion and formed with an outwardly presented conical valve seatthe larger end of which is approximately the diameter of said bore,located between said thread and the lower extremity of said stem, a.cup' mounted on the upper end of said stem around said bore, and a valvehaving a conical seating surface at its lowerend, said valve having ascrew-thread engaged with the screwthreaded portion of said bore, andthe body of said valve, exclusive of its said screwthread and the saidseating surface, being of approximately the same diameter throughout,and one of the screw threaded membersoof said screw connected parts having a groove leading from said cup toA said valve seat.l

2. A priming cup, comprising a stem havin a bore screw-threaded for aportion oi' its length in its outer end, a thin cylindrical extensionfrom the outer end of said 'threaded portion, said stem having a wrench'receiving head about said threaded portion,

and the portion of said bore below said threaded portion having anoutwardly presented conical valve-seat, a frusto-conical sheet metal cuphaving a bottom opening into .which said cylindrical extension fits,:said extension being bottom of said cup,the base of said cup beturnedover upon the ing of slightly. greater width than said wrench-head, andan exteriorly threaded valve having a conical seating surface at itsinner end, said valve being screwed into the screw threaded portioii ofsaid`hcre, and one oi the screw-threaded members of said screw connectedparts having a groove leading from said cup to sai valve seat.

3. A priming cup, comprising an exteriorly7 screw-threaded stem having abore screw-threaded for a portion of its length in its outer end, aportion of said bore being formed Awith a conical valve-seat the largerendof Iwhich is approximately the diameter of said bore, locatedintermediately of the length of the exteriorly screw-threaded portion ofsaid stem so that the lower spirals of the interior screw-thread aredisposed within the upper spirals of the exterior screw-thread, a wrenchreceiving head `.about the upper threads of said interior screwthread,and a valve having a conical seating surface at its inner end, saidvalve having a screw-thread engaged with the screwthreaded portion ofsaid bore, and the body of said valve, exclusive of its said screwthreadand the said seating surface, being of approximately thc same diameterthroughout, one of the said screw-thread connected members having alongitudinal groove leading from the top of said bore to said valveseat.

Signed at Detroit, Mich., this -29th (lay 0f May, 1917.

RUSSELL nora.

Witnesses:

REGINALD J. FRY, ALFRED H. KNIGHT.

